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LIGHTING EFFICIENCY

LIGHTING EFFICIENCY. Neil Hope Taylor McKenzie. LIGHTING EFFICIENCY. the amount of visible light produced for a given energy input. Historically, lightbulbs were purchased based on energy consumption

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LIGHTING EFFICIENCY

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  1. LIGHTING EFFICIENCY Neil Hope Taylor McKenzie

  2. LIGHTING EFFICIENCY the amount of visible light produced for a given energy input

  3. Historically, lightbulbs were purchased based on energy consumption • Today, more informed decisions may be made based on a bulb’s light output and energy consumption • However, not all lightbulbs’ light output is the same

  4. Luminosity Function • Response of the Human Eye to light

  5. Sources of Inefficiencies • Heat generation • Generation of radiation outside the visible spectrum

  6. Lighting Options • Incandescent lamps • Fluorescent Lamps • LED (lamps) • Electron Stimulated Luminescence • Halogen Lamps • Sodium Lamps

  7. Electron Stimulated Luminescence

  8. Sodium

  9. Household Lighting

  10. Lighting Efficacy

  11. Thank You • Any Questions? • eg When does the break start? • Sooner if you don’t ask questions

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